Speed, Distance and Velocity

Why don't the runners in the 400m dash start at the same line?

• so their distance is the same
• so their displacement is the same
• so their speed is the same
• so their velocity is the same

Which turtle won the race?

• Bill
• Myrtle
• Zed

Acceleration is the rate of change of

• position
• time
• speed
• velocity

A horizontal line on a graph shows

• positive acceleration
• negative acceleration
• change
• zero acceleration

Which is an example of a car NOT accelerating?

• moving at 80km/h on a flat, straight highway
• slowing down to round a corner
• speeding up to win the race
• crossing the finish line and pulling into the pit

Which describes how velocity changes over time?

• acceleration
• average speed
• velocity
• instantaneous speed

If you want to calculate the acceleration, you ________ the change in speed by the time

• add
• subtract
• divide
• multiply

A train approaches a crossing and goes from 25m/s to 10m/s in 240s, how can the train's acceleration be described?

• positive
• negative
• zero
• constant

Which runner had a head start?

• A
• B
• C
• None of them

Tags

CCSS.8.EE.B.5

The strength of gravity depends on

• friction and tension
• speed and direction
• mass and distance
• centripetal and centrifugal